<template>
	<view class="cart-container" v-if="cartList.length !== 0">
		
		<!-- 收获地址组件 -->
		<my-address></my-address>
		
		<!-- 商品列表区域 -->
		<view class="cart-title">
			<!-- 左侧的图标 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 右侧的文本 -->
			<text class="cart-title-text">购物车</text>
		</view>
		
		<!-- 循环渲染购物车中的商品信息 -->
		<uni-swipe-action>
			<block v-for="(goods,index) in cartList" :key="index">
				<uni-swipe-action-item :right-options="options" @click="swiperItemClickHandler(goods)">
					<my-goods :item="goods" :showRadio="true" @radio-change="radioChangeHandler" @num-change="numchangeHandler"></my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>
		
		<!-- 使用自定义的结算组件 -->
		<my-settle></my-settle>
		
	</view>

	<!-- 空白购物车的区域 -->
	<view class="empty-cart" v-else>
		<image src="../../static/cart_empty@2x.png" class="empty-image"></image>
		<text class="tip-text">空空如也</text>
	</view>
</template>

<script>
	import badgeMix from '@/mixins/tabbar-badge.js'
	import {mapState,mapMutations,mapGetters} from 'vuex'
	export default {
		mixins:[badgeMix],
		data() {
			return {
				options:[{
					text:'删除',
					style:{
						backgroundColor:'#C00000'
					}
				}]
			};
		},
		computed:{
			...mapState('cart',['cartList']),
			...mapGetters('cart',['total'])
		},
		methods:{
			...mapMutations('cart',['updateGoodState','updateGoodsCount','removeGoodById']),
			radioChangeHandler(e){
				//console.log(e);
				this.updateGoodState(e)
			},
			//数量变化处理函数
			numchangeHandler(data){
				this.updateGoodsCount(data);
				//console.log(data);
			},
			//删除一行
			swiperItemClickHandler(data){
				this.removeGoodById(data.goods_id);
			}
		},
		// watch:{
		// 	total(newVal){
		// 		uni.setTabBarBadge({
		// 			index:2,
		// 			text:newVal + ''
		// 		})
		// 	}
		// }
	}
</script>

<style lang="scss">
.cart-title{
	height: 40px;
	display: flex;
	align-items: center;
	padding-left: 5px;
	border-bottom: 1px solid #efefef;
	.cart-title-text{
		font-size: 14px;
	}
}
.cart-container{
	padding-bottom: 50px;
}
.empty-cart{
	display: flex;
	flex-direction: column;
	align-items: center;
	.empty-image{
		height: 90px;
		width: 90px;
		padding-top: 150px;
	}
	.tip-text{
		font-size: 12px;
		color: gray;
		margin-top: 15px;
	}
}
</style>
